Gas-burner.



R. V. HOWES.

Patented Nov. 5, 1918.

2 SHEETS-SHEET l- 7 R Mm m EN TOR iberfllfiomes R.-V. HOWES.

GAS'BURNER.

APPLICATION FILED MAY I0. I915.

5,1918. -SHEET 2- Patented m 2 SHEETS WITNESSES 5 05a? 1/ H0 143.5 A ByA TTOR/VEYS GAS-BURNER.

Specification of Letters Patent.

Application filed May 10, 1918. Serial No. 238,703.

To all whom it may concern:

Be it known that I, ROBERT V. Howns, a citizen-of the United States, anda resident of the city of New York, borough of Brooklyn, in the countyof Kings and State of New York, have invented a new and ImprovedGas-Burner, of which the following is a. full, clear, and exactdescription.

This invention relates to burners and has for an object the provision ofan improved construction which may be used in any stove or range orother appliance especially constructed for burning coal, gas, wood, oroil.

Another object of the invention is the provision of a gas burningstructure wherein a heat absorbing body is provided and formed so as toloosely accommodate gas pipes whereby air surrounding the pipes may beheated before being discharged ad- 0 jacent the end of the pipe carryingthe flame. A still further object of the invention is the provision of agas burner using a combustion mixture and certain arrangement of pipesand heat retaining material whereby 5 an auxiliary supply of heated airis provided adjacent the supply or mixture of air and gas so that amaximum combustion is secured and consequently a maximum heat procuredfrom a given volume of gas. In the accompanying drawings:

Figure 1 is a longitudinal vertical section through an ordinary coalburning stove, with an embodiment of the invention shown appliedthereto. Fig. 2 is'a sectional view on a slightly enlarged scale throughFig. 1 on line 22.

Fig. 3 is a top plan view of a burner emparts of the construction. Fig.4 is a transverse sectional view through Fig. 3 on line 4-4.

view similar to Fig. 4, but showing a slightly modified form of theinvention. Referrin to the accompanying drawings by numera s, 1indicates a stove of any desired kind, as for instance an ordinarykitchen ran e designed for using wood or coal as fue The stove hasnaturally .a smoke pipe 2 connected therewith so as to re- 7 move thesmoke and unburnt gases from the fire chamber 3. A ate 4 is arranged atthe bottom of the fire c amber 3, said grate being of any desired orusual structure for supporting wood, coal, or any desired --fuel.

bodying the invention the same being partially broken away forillustrating certain Fig. 5 is a detail fragmentary sectional 'duce anextreme Patented Nov. a, rare.

Arranged in thefire chamber 3 is a burner 5 embodying the inventionwhich utilizes gas. as fuel for heating the stove 1-. This burner, asshown more particularly in Figs. 2 to 4 inclusive, is provided with abody 6 formed" preferably in a solid block and provided with a number ofapertures 7. The material I of which the block 6 is made may vary asdesired, as for instance a refractory material may be used, fire-brickbeing especially desirable as preferably some form of material is usedwhich will absorb heat and thereby raise the temperature of the airpassing through the openings or passageways 7'. Passageways 7 may bearranged in any desired order, as for instance in rows as shown in Fig.2. In each of these passageways is arranged a pipe 8 of any suitablematerial, as for instance metal. All of the pipes 8 of a single row-arepreferably connected to an auxiliary header 9 as shown in Fig. 4.

The various headers 9 are connected to the main orprincipal header 10 bypipes 11, there being one pipe 11 for each header 9. An air mixer 12, isprovided for each of the pipes 11, as well as the valve 13. In mountingthe tubes or pipes 8 in the passageways 7 the parts are soproportionedthat there 'will be an appreciable air space aroundthe-pipes, and said pipes are also'of such a length as to fall shortsomewhat of the upper surface of the block 6 as shown in Fig. 2. [Duringthe operation of the burner air will pass upwardly through thepassageways 7 and mix with the gas emerging from they; pipes 8, said airmoving somewhat as a hollow column so as to, in a certain sense,surround the flame at the lower end and thereby provide an exceptionallygood mixture.

During the more or less continuous use of the burner heat will beabsorbed by the block 6 and consequently .the 'airin the passageways 7will be heated so that air at a comparatively high temperature will besupplied to the gas as it passes through pipes 8. The heating of theairwill cause anupdraft so that the air will be supplied to the gas atsome appreciable ressure and thereby ro- 1 hot and intense fl zimehaving a higher flame temperature than the ordinary atmospheric burner,while at the same time producing perfect combustion withasmallerpercentage of excess air than is ordinarily necessary. The thickness ofthe block 6 may vary as occasion may demand, but is preferably of someappreciable thickness so as to provide as long a passageway 7 aspossible. The block 6 may be sup- 7 rest upon the grate 4 or othersuitable support and may be solid as shown, or may be provided withapertures 19' as shown in Fig. 5, so that air may enter from the bottominto the open space 20, or from the sides and ends into said open space.The open space 20 is supplied with air from the usual ash pit of thestove 1 and said air passes up through the passageways 7 as thesecondary air while the primary air is taken in at the Various mixers12. This arrangement of air-inlet and associate parts permits any onemixer and any one row of pipes '8 tobe used so that all of the pipescould be used at full capacity or partial capacity,.or any one row maybe used whereby there is great flexibility in the control of the heatproduced.

. What I claim is:

1. A gas burner comprising a block, a plureality of apertures therein, agas pipefitting into each of said apertures, but not filling theapertures, a supply pipe for supplying gas to said first mentionedpipes, and an air mixer for mixing air with the gas passing through saidsupply pipe whereby said first mentioned-pipes will discharge a mixtureof air and gas, and the apertures in'which the first mentioned pipes arepositioned will supply secondary air.

r 2. A gas burner comprising a block of non-combustible material havinga plurality v of apertures extending therethrough, a ipe fitting intoeach of said apertures exten ing meagre from the bottom to near the top,said pipes being of a less diameter than said apertures, a supply. pipefor the first mentioned pipes, an air and gas mixer connected with'saidsupply pipe, and means directing a supply of gas to said ir and gasmixer.

3. A as burner for coal burning stoves comprising a body fitting intothe fire chamber'of the st0ve,,said body having a plurality ofpassageways extending vertically therethrough, a gas pipe arranged ineach of said passageways, extending from the bottomupwardly to near thetop of the body,

said gas pipes being arranged in series, an

aux1l1ary header for each series of pipes, an independent supply pipefor each header, an air and gas mixer for said supply pipes, means forsupplying gas to said mixers under pressure and a' valve for each mixerpositioned between the means for supplying gas and the respectivemixers, said first mentioned pipes being of less diameter than theapertures in which. they are positioned, whereby as the mixture of airand gas from said mixers passes through said ipes air will pass aroundsaid pipes an be discharged in a substantially tubular sheet from saidbody.

4. A gas burner comprising a solid block of refractory material having aplurality of series of passageways extending from the bottom to the topwhereby when the block is heated the air in said assageways will movewith some appreciabl i speed therethrough, a gas pipe arranged in eachof said passageways extending from below the bottom to near the top,each of said gas pipes falling short of the top, an auxiliary header forthe gas pipes of each series of passageways, a supply pipe connected toeach of said headers whereby any series of gas pipes may be providedwith gas, an air mixer connected with each of said supply pipes, andmeans to supply gas under pressure to each of said air mixers.

aoennr v. Howns.

